25319992 has 16 divisors (see below), whose sum is σ = 47548800. Its totient is φ = 12640320.

The previous prime is 25319971. The next prime is 25320011. The reversal of 25319992 is 29991352.

It is a super-2 number, since 2×25319992² = 1282203989760128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4009 + ... + 8167.

It is an arithmetic number, because the mean of its divisors is an integer number (2971800).

Almost surely, 2^25319992 is an apocalyptic number.

It is an amenable number.

25319992 is a deficient number, since it is larger than the sum of its proper divisors (22228808).

25319992 is a wasteful number, since it uses less digits than its factorization.

25319992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926 (or 4922 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 25319992 is about 5031.8974552350. The cubic root of 25319992 is about 293.6440383174.

The spelling of 25319992 in words is "twenty-five million, three hundred nineteen thousand, nine hundred ninety-two".